Piston sealing ring assembly having a gap cover element
AssigneeMainspring Energy, Inc.
InventorsJodie Prudhomme, Matt Svrcek
Life of this patent
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Abstract
The present disclosure provides a sealing ring assembly having ring segments configured to seal a high-pressure region from a lower pressure region of a piston and cylinder device. The sing segments are configured to move radially outward and wear during operation of the piston via the cylinder device. The ring segments include, for example, wedge-shaped features that engage with corresponding wedge recesses in the interfaces between ring segments. The sealing ring assembly may include a high-pressure boundary and a low-pressure boundary. As the sealing ring wears, the ring segments stay engaged with the interfaces, so that ring gaps do not form on the low pressure boundary.
Claims20
A sealing ring assembly comprising:
- at least one monolithic ring segment comprising a feature,
- wherein:
- the feature comprises a radially outward surface,
- the feature extends radially along an axial side of the at least one monolithic ring segment,
- the radially outward surface of the feature is configured to wear by sealing against a bore of a cylinder, and
- a surface area of the radially outward surface of the feature is configured to increase as the radially outward surface of the feature wears against the bore.
A piston assembly comprising:
- a piston comprising a circumferential groove that extends around an outer surface of the piston, wherein the piston is to translate axially in a bore;
- and
- a sealing ring assembly comprising:
- at least one monolithic ring segment comprising a feature, wherein:
- the feature comprises a radially outward surface,
- the feature extends radially along an axial side of the at least one monolithic ring segment,
- the radially outward surface of the feature is configured to wear by sealing against the bore, and
- a surface area of the radially outward surface of the feature is configured to increase as the radially outward surface wears against the bore.
Dependencies are inferred from the claim text.